Home vaginal pH tests showed good agreement with a doctor's diagnosis. However, just because you find changes in your vaginal pH, doesn't always mean that you have a vaginal infection. pH changes also do not help or differentiate one type of infection from another.
For women with a normal, active menstruation cycle, the vaginal pH is typically between 3.8 and 5.0 [3]. Abnormal menstrual cycles are a common feature of puberty. Their existence is related to an increased risk of abnormal pH.